After dipping my toe back in the mu4/3 water last month (after a year long hiatus) with a new-to-me, used E-M5 and my "old" Panny 20/1.7, I have since picked up the 40-150 kit zoom and an OM 50/1.8+Fotodiox adapter. While the MF lens is really fun to play with--I love the quality/smooth feel--and the zoom lens covers a good range, what I really wanted was the fast focusing, low light, relatively thin DOF capability of the 45/1.8 (the OM lens at 1.8 is too soft for enlargements, though wonderful at 2.8+). I can't wait to try out the new lens tonight! When my pennies are saved, I hope to get the 12-40 and the new pro tele zoom. Dang, this E-M5 is going to cost me a fortune.